Well-timed bets on Polymarket tied to the Iran war draw calls for investigations from lawmakers

Such prescient wagers have raised eyebrows -- and accusations that prediction markets are ripe for insider trading. And the issue goes beyond these three geopolitical events, according to at least one report. Researchers at Harvard University released a paper last month where, using public blockchain data, they estimated that $143 million in profits have been made on Polymarket by individuals who potentially had insider information about events ranging from Taylor Swift's engagement to the awarding of the Nobel Peace Prize last year.